Explore topic-wise MCQs in Chemistry.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the half-life of atomic hydrogen?

A. 0.33s
B. 1.33s
C. 2.33s
D. 3.33s
Answer» B. 1.33s
Discussion
2.

Deuterium is also known as _________

A. dark hydrogen
B. heavy hydrogen
C. light hydrogen
D. radioactive hydrogen
Answer» C. light hydrogen
Discussion
3.

Which of the following option is true regarding the boiling point of hydrogen isotopes?

A. all three isotopes have an equal boiling point
B. deuterium has a greater boiling point than tritium
C. tritium has a greater boiling point than that of protium
D. protium has a higher boiling point than that of tritium
Answer» D. protium has a higher boiling point than that of tritium
Discussion
4.

Deuterium has a melting point higher than that of hydrogen.

A. true
B. false
Answer» B. false
Discussion
5.

Which of the following as a greatest relative atomic mass?

A. tritium
B. protium
C. deuterium
D. all have equal mass
Answer» B. protium
Discussion
6.

Which of the following statements is true regarding the density of isotopes of the hydrogen?

A. protium’s density is greater than that of tritium
B. tritium’s density is greater than that of deuterium
C. deuterium’s density is greater than that of tritium
D. protium’s density is greater than that of deuterium
Answer» C. deuterium’s density is greater than that of tritium
Discussion
7.

Protium has a greater relative abundance than tritium.

A. true
B. false
Answer» B. false
Discussion
8.

Which of the following is Radioactive?

A. protium
B. tritium
C. chlorine
D. deuterium
Answer» B. tritium
Discussion
9.

How much percent of the total mass of the Universe is dihydrogen?

A. 60
B. 17
C. 65
D. 70
Answer» E.
Discussion